20446550613 has 12 divisors (see below), whose sum is σ = 29562345280. Its totient is φ = 13617908136.

The previous prime is 20446550587. The next prime is 20446550623. The reversal of 20446550613 is 31605564402.

20446550613 is a `hidden beast` number, since 2 + 0 + 4 + 46 + 550 + 61 + 3 = 666.

It is not a de Polignac number, because 20446550613 - 2⁶ = 20446550549 is a prime.

It is a super-2 number, since 2×20446550613² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20446550623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1083931 + ... + 1102632.

Almost surely, 2^20446550613 is an apocalyptic number.

It is an amenable number.

20446550613 is a deficient number, since it is larger than the sum of its proper divisors (9115794667).

20446550613 is a wasteful number, since it uses less digits than its factorization.

20446550613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187608 (or 2187605 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 20446550613 in words is "twenty billion, four hundred forty-six million, five hundred fifty thousand, six hundred thirteen".